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The use of energy generation and storage technologies has gained great importance in recent years. Considering the developments in the field of sodium ion batteries (Na-ion), because of their low cost, these materials will be an alternative to lithium ion (Li-ion) batteries in the near future. The important reasons that make Na-ion batteries so attractive are that they have similar chemical properties with lithium and their production costs are lower. In this study, NaFePO4 cathode material was produced by applying two-steps heat treatments with solid state reaction method. For the structural characterization of produced materials XRD, SEM, FTIR were used and their magnetic properties were investigated by χ-T analyzes. Cyclic voltammetry (CV) and capacity measurements were made to investigate the battery performance and electrochemical properties of cathode materials. There was not observed impurity phases in XRD analysis in the structure of the NaFePO4 cathode material. The capacity of cathode materials has been measured for 100 cycles in the 1.5-4.0 V range. It was observed that the initial discharge capacity of this battery was 26.29 mAh g-1 and the capacity value increased %10.99 at the end of the 100th cycle. [ABSTRACT FROM AUTHOR]